{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "In conclusion , these results identify full - length OPN and its fragments as novel , physiologically relevant substrates for PHEX , suggesting that accumulation of mineralization - inhibiting OPN fragments may contribute to the mineralization defect seen in the osteomalacic bone characteristic of XLH / HYP ."}
{"Chemical": []}